Elk Rock Island
Elk Rock Island is an island on the Willamette River in the U.S. state of Oregon. The 12- to 13-acre island, formed 40 million years ago by a volcano, was given to Portland by Peter Kerr in 1940. The city of Milwaukie took ownership of the park in April 2016.Ecology
The island contains deciduous forest, mixed evergreen-deciduous forest and perennial graminoid vegetation. It is one of the last stands of the Oregon White Oak.
